Research on an embedded detection method for angular displacement of turntable bearing

Tao Luo; Xi-hou Chen; Shuang-yuan Yang; Ye Tao; Hai-ning Zhou; Guo-li Zhu

doi:10.1117/12.2612169

19 November 2021 Research on an embedded detection method for angular displacement of turntable bearing

Tao Luo, Xi-hou Chen, Shuang-yuan Yang, Ye Tao, Hai-ning Zhou, Guo-li Zhu

Proceedings Volume 12059, Tenth International Symposium on Precision Mechanical Measurements; 120591G (2021) https://doi.org/10.1117/12.2612169
Event: Tenth International Symposium on Precision Mechanical Measurements, 2021, Qingdao, China

Abstract

Turntable bearings are widely used in the fields of national defense, industrial manufacturing and precision machining, and the precise measurement of their displacement is very important. A cylindrical embedded magnetic field angular displacement sensor based on PCB process is presented in this paper. In this design, the coil required by the electromagnetic induction sensor is distributed in the flexible PCB , and there is no need to provide a specific shape of the iron core to place the metal coil, which is easy to achieve embedded measurement. In this paper, the magnetic field distribution of cylindrical coil is modeled according to Biot-savar's law, and the mathematical relationship between magnetic induction intensity and coil structure is obtained. The coil structure is designed according to the mathematical relationship obtained. The feasibility and accuracy of the theoretical model were verified by finite element simulation software. Finally, a prototype was made for measuring angular displacement of bearing with inspection. Experiments show that the resolution of the sensor can reach 0.5 "and the original error is ±80" in the range of 0~360°.

Citation Download Citation

Tao Luo, Xi-hou Chen, Shuang-yuan Yang, Ye Tao, Hai-ning Zhou, and Guo-li Zhu "Research on an embedded detection method for angular displacement of turntable bearing", Proc. SPIE 12059, Tenth International Symposium on Precision Mechanical Measurements, 120591G (19 November 2021); https://doi.org/10.1117/12.2612169

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KEYWORDS

Sensors

Magnetism

Mathematical modeling

Signal processing

Electromagnetism

Prototyping

Computer simulations

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